I've run into another issue. My key fob won't lock or unlock my car. I bought it used a week ago & it only came with one key fob. When I press the lock/unlock buttons the car's lights will flash as if it's locking/unlocking, but nothing happens.
What I've tried (with no success)
-changing battery in key fob
-changing 10amp fuse in fuse box
-synching the key fob using the following method
- put key in ignition, press lock or unlock twice, turn key to on/run position and wait 30 seconds, get out of the car, shut the doors, and attempt to lock/unlock
-tightening the battery cables
I've pretty much tried every solution I've seen on the forum. If anyone has any information that would be extremely helpful. Just to be clear, the key itself starts the vehicle & can lock/unlock the doors manually. I've got an appointment at the dealer about two weeks from now, but hoping to have the issue resolved before then.
EDIT: I've pulled my Central Locking Control Pump Module & this is what I found. A few small touches of corrosion... looks like there was water in the trunk at some point, but just doesn't seem like a lot of rust to me. Not sure if replacing this would solve my issue? See pictures.
EDIT #2: Took it to an independent Mercedes shop. The code thrown is as follows: "Driver cylinder lock switchSense (lock) short to supply voltage."
Board
Connector
Connector
Bottom of board
Connector